Classifying or separating machine



Nov. 1, 1927.

P. H. RAUN CLASSIFYING 0R SEPARATING MACHINE Filed Jan. 7, 1926 INVENZ 'OR A 'TTORNEY Patented Nov. 1, 19 27.

UNITED STATES PATENT OFFICE.

PETER H. RAUN, OF FREDERICK, MARYLAND, ASSIGNOR TO THE FREDERICK IRON &

, STEEL COMPANY, OF FREDERICK, MARYLAND, A CORPORATION OF MARYLAND.

Application filed January My invention relates boardly to classifying or separating machines and more particularly to the construction of a machine for separating material into predetermined slzes with means for preventing clogging of the material during the separating process.

One of the objects of my invent on is to provide aconstruction of classlfying machine in which. a plurality of longltudinally disposed rollers are provided with means. for

spraying liquid from the rollers for preventing cloggingof material between the rollers.

Another obj ect. of myinvention is to provide a construction of classifying machine in which a plurality of longitudinally (heposed rollers spaced one from another throughout their length are provided, with liquid spray means for preventing clogg ng ofjmaterial betweenthev rollers and enabling the machine to be. operated while the material which is being classified is in moist condition for avoiding undesirable distribution of dust particles and dirt in the v1c1n1ty of themachine.

Still another object of my invention is to rovidea. construction of combined .manlold and bearings for a plurality of hollow rollers in a separating or-classifymg machine,-the manifold connecting the rollers with a source of fluid pressure. and the rollers being apertur'ed to enable the flurd to be. sprayed upon the materlal WlllCll is being classified.

A further object of my inventlon 1s to provide .a construction of classifying, machine in which the material being separated is passed over a; plurality of longitudinally spaced rollers and subjected to a liquid spray bot-h upwardly and downwardly for maintaining the material in moist conditlon and preventing clogging between the rollers while material of a predetermined size passes through therollers and oversize material is conveyed over the rollers and discharged therefrom.

My invention will be more fully understood from the following specification by reference to the accompanying drawings,

wherein: V r

Figure 1 is a plan view illutrating the arrangement of longitudinally spaced rollers and the liquid spraying apparatus by whlch the material is treated. during .the classifying operation; Fig. .2 is a longitudinal view partially in cross-section through; the classl- 7, 1926. Serial-No. 79,745.

fying machine on line 22 of Fig. 1'; and Fig. 3 is a lateral cross-sectional view of the machine on line 3-3 of Fig. 2.

Referring to the drawings in more detail, the separating or classifying. machine is driven from a main shaft 1 having a pulley 2 thereon which may be driven by belt 3. A gear case. 4. is provided in which the shaft l is housed enclosing bevelgears 5 and 6 keyed to the shaft 1 in positions Where the. gears mesh with bevel pinion gears repre-v sented at 7 and 8 on the end of the rotatable shafts 9 and 10. There are a plurality of similar shafts in the classifying machine .which I have represented at 11, 12, 13, and 76 14. The shafts 11, 12, 9, 10, 13 and 14 are journaled in bearingmembers 15, 16, 17 18, 19 and 20 which are adj ustably mounted on a lateral end frame member 21 in such manner that the spaces between the bearing members may be selected in proportion to the size of'material whichit is desired to pass through the classifying machine. The classifying machine is built up by a structure comprising the laterally extending. frame members 21 and 22 connected by means of longitudinally extending side frame members 24 and.25.. Positioned within the longitudinally extending frame members '24 and 25 Y and between thelaterally extending frame members 21 and 22 I provide a plurality of rollers 26,27," 28, 29, 3,0 and 31 supported on the shaft members 11,12, 9, 10, 13 and 14 at one end and on hollow shaft members .32, 33, 34, 35, 36, and 37 on the opposite ends thereof. Adjustable. bearing members 38, 39, 40, 41, 42 and 43 are carried by the laterally extending frame member 22 and form journals for the lower ends of the rollers in a manner similar to the journals 15,16,17, 18,119 and 20;carried in the upper frame member 21. The rollers are mounted in an inclined plane enabling material to be passed thereover'and gravitated toward the lower end of the machine. The lower ends of the 1 rollers are each providedwith bafiie plates as has been represented in-the case of roller 29. by baffle plate 44 and thelower ends of the rollers are each perforated with apertures designated at26 27?, 28, 29 30 and 31.. 105 Liquid under pressure is. conveyed to'each' of the perforated sections through a manifold 45 with tubemembers 46, 47, 48, 49, 50 and 51 extending .throughfeach of the bearings 38, .39, 40, 41,, 42 and 43 and passing into i as journals for the lower ends of the rollers.

I provide a pair of guide plates 52 and 53 for directing the material which is deposited in the classifying machine over the longitudinally extending rollers, Above the guide plates 52 and 53 adjacent the lower end of the classifying machine, I provide a laterally extending manifold 54 through which liquid under pressure is conveyed and sprayed through apertures 54* upon thc material being passed through: the classifying machine. Beneath the manifold. 54 and the apertured portions in the rollers 26', 27, 2 8, :29, 30 and 31 I provide a trough 55 in which the excess liquid which is, not absorbed by the'ma terlal passing through the classifying machine is caught and conveyed away through a pipe line 5.6.7

In the. operation of the classifying machine, the rollers 26, 27, 28, 29, 30 and 31 are spaced at predetermined positions with respect. to each other by fixing the adjustable bearings 15-, 16 17, 18, 19 and 2O at the upper end: of the rollers and the adjustable bearings. 38,- 39, 4O, 41, 4-2 and 4:3 at the lower ends of the rollers at predetermined distances in the lateral frame members 21 and 2-2. The material which is then deposited upon chute 57 and against guide plates. 52 and is conveyed in an inclined direction over the driven rollers and material of a predetermined size passes through the rollers while oversize material is discharged over the rollers at the lower end of While. I have described invention in certain particular embodiments, I desire that it. be: understood that modifications may be made and that no limitations upon the invention are intended other than those imposed by the scope of the appended claims.

What I claim and desire to secure by Letters: Patent of the United States is as'follows.:

e 1:. A separating or classifying machine comprising in combination a plurality of rollers spaced one from another in an inclined plane, means for delivering material to: be separated over said rollers, sets of bearings for opposite ends of said rollers, sections of said: rollers being apertured, saidbearings adjacent said section-s being provided with means. for conveyingflu-id under pressure to saidlsections for subjecting the material to be separated to liquid sprays emanating from said rollers.

2.. A separating o-rclassifying machine comprising: in combination a plurality of V apertured rollers: spaced one from anotherin an inclined plane, and means mounted adjacent the lower end of' said rollers and concentric with the axes thereof for conveying liquid under pressure to said rollers for subjecting material which to. be classified to a liquid spray emanating from said roll'ers.

3. A separating or classifying machine comprising in combination a plurality of rollers spaced one from another and mounted in an inclined plane, means for directing bulk material tobe separated over said rollers,bearings for opposite ends ofsaid rollers, the lower portions of each of said rollers being apertured, and means extending through, thebearings at the lower ends of said rollers for introducing liquid under pressure into the aperturedi portions of said rollers. whereby the material which is to be.

separated is sub ected to liquid spray ema-' nating from said rollers.

4. A separating or classifying machine comprising in combination a plurality of rollers spaced one from another and mounted in an inclined plane, means for d irecting bulk material to, be separated over said rollers, bearings for opposite ends of. said rollers, the lower portions of each of said rollers being apertured, means extending through the lower bearings into said rollers for introducing liquid under pressuremto saidapertured portions of said rollers,

and means above said aperture'd portions: of said rollers for directing a spray of liquid downwardly to meet the spray of liquid di-.

rected from said rollers, whereby material to be separated is liquid sprays.

5 A separating or classifying machine comprising in combination a plurality of longitudinally extending rollers spaced one from another-,meansfor directing bulk material to beseparated over said-rollers, sop-'- arate upper and lower sets of bearings for opposite ends" of said rollers, a manifold adjacent thelo'wer set of? said bearings, the lower ends. of said rollers being hollow and arranged [toreceive flu-id underpressure; from said manifold, said rollers being apertu-red to permit liquid toghe sprayed upon material being passed over said rollers for separation.

6. In a separating or classifying machine the combination of a plurality of longitudinal-ly extending rollers, sets of upper and lower bearings for said rollers, the set of lower bearings being apertured for the passage of pipe members therethrough, thepassed througlr opposed:

lower ends of each of said rollers being 7 hollow to receive liquid under pressure therein and apertured to permit the spraying of fluid therefrom over a limited portion of the length of said rollers, the ex-- ternal ends of said pipe members being sup plied from a common manifold with fluid under pressure, whereby material beingsepa arated is subjected to a liquid spray during the separating process.

7. A separating or classifying machine comprising in combination a plurality of rollers spaced one from another, means for delivering bulk material to be separated over said rollers whereby said rollers operate to grade said material with respect to size, sets of bearings for opposite ends of said rollers, portions of said rollers being apertured and the bearings adjacent said portions being provided with means for conveying fluid under pressure to said portions for subjecting the material to be separated to liquid sprays.

8. A separating or classifying machine comprising in combination a plurality of rollers spaced one from another, means for directing bulk material to be separated over said rollers, bearings for opposite ends of said rollers, the peripheries of each of said rollers adjacent one end being apertured while the peripheries of said rollers over the remaining portion of their lengths are solid, and means extending through the bearings "at the lower ends of said rollers for introducing liquid under pressure into the apertured portions of said rollers whereby the material which is to be separated is subjected to liquid spray.

In testimony whereof I aflix my signature.

PETER H. RAUN. 

